Enhanced magnetic anisotropy energy density for superparamagnetic particles of cobalt

被引：30
|
作者：
Hickey, BJ [1 ]
Howson, MA [1 ]
Greig, D [1 ]
Wiser, N [1 ]
机构：
[1] BAR ILAN UNIV,DEPT PHYS,RAMAT GAN,ISRAEL
来源：
PHYSICAL REVIEW B | 1996年 / 53卷 / 01期
关键词：
D O I：
10.1103/PhysRevB.53.32
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We use our measurements of the magnetization and the magnetoresistance for very small superparamagnetic particles of Co to obtain the low-temperature value of the magnetic anisotropy energy density, C approximate to 3x10(8) erg/cm(3). This is nearly two orders of magnitude larger than the corresponding value for C for bulk Co. The enormous enhancement of C for very small particles of Co is consistent with results previously reported for very small particles of Fe and of FeNi.
引用
收藏
页码：32 / 33
页数：2
相关论文
共 50 条
  • [1] Anisotropy effects on the nonlinear magnetic susceptibilities of superparamagnetic particles
    GarciaPalacios, JL
    Lazaro, FJ
    PHYSICAL REVIEW B, 1997, 55 (02): : 1006 - 1010
  • [2] Magnetic anisotropy of nanoscale cobalt particles
    Xie, YN
    Blackman, JA
    JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (18) : 3163 - 3172
  • [3] Longitudinal complex magnetic susceptibility of superparamagnetic particles with cubic anisotropy
    Kalmykov, YP
    Titov, SV
    PHYSICS OF THE SOLID STATE, 1998, 40 (10) : 1721 - 1722
  • [4] Longitudinal complex magnetic susceptibility of superparamagnetic particles with cubic anisotropy
    Yu. P. Kalmykov
    S. V. Titov
    Physics of the Solid State, 1998, 40 : 1721 - 1722
  • [5] Magnetic interaction between superparamagnetic particles in nanogranular cobalt films
    R. S. Iskhakov
    G. I. Frolov
    V. S. Zhigalov
    D. E. Prokof’ev
    Technical Physics Letters, 2004, 30 : 687 - 689
  • [6] Magnetic interaction between superparamagnetic particles in nanogranular cobalt films
    Iskhakov, RS
    Frolov, GI
    Zhigalov, VS
    Prokof'ev, DE
    TECHNICAL PHYSICS LETTERS, 2004, 30 (08) : 687 - 689
  • [7] FMR study of superparamagnetic Ni particles with weak and strong magnetic anisotropy
    M. M. Yulikov
    P. A. Purtov
    Applied Magnetic Resonance, 2005, 29 : 231 - 249
  • [8] FMR study of superparamagnetic Ni particles with weak and strong magnetic anisotropy
    Yulikov, MM
    Purtov, PA
    APPLIED MAGNETIC RESONANCE, 2005, 29 (02) : 231 - 249
  • [9] Longitudinal complex magnetic susceptibility and relaxation time of superparamagnetic particles with cubic magnetic anisotropy
    Kalmykov, YP
    Titov, SV
    Coffey, WT
    PHYSICAL REVIEW B, 1998, 58 (06): : 3267 - 3276
  • [10] ORIGIN OF THE MAGNETIC ANISOTROPY ENERGY OF COBALT FERRITE
    TACHIKI, M
    PROGRESS OF THEORETICAL PHYSICS, 1960, 23 (06): : 1055 - 1072
12345